1SDA072802R1 ABB E1.2B 1250 Ekip Dip LSI 4p WMP Air Circuit Breaker

Why Choose the ABB E1.2B 1250 Ekip Dip LSI 4p WMP Air Circuit Breaker?

The ABB E1.2B 1250 Ekip Dip LSI 4p WMP, order code 1SDA072802R1, is a high-performance four-pole withdrawable air circuit breaker moving part designed for protection and switching in low-voltage power distribution systems. As part of the ABB SACE Emax 2 E1.2 series, it combines a 1250 A rated current with an Ekip Dip LSI electronic trip unit for comprehensive overload and short-circuit protection.

The Ekip Dip LSI trip unit provides long-time overload, short-time delayed short-circuit and instantaneous short-circuit protection. Its adjustable electronic protection settings enable effective coordination with upstream and downstream protective devices, helping protect cables, busbars, switchgear and connected equipment against damaging overcurrents.

The E1.2B performance level provides an ultimate short-circuit breaking capacity of 42 kA at 415 V AC and a rated short-time withstand current of 42 kA for 1 s. Its withdrawable moving-part construction allows the breaker to be separated from the corresponding fixed chassis for inspection and servicing, while the four-pole configuration supports switching and protection across four conductors.

Key Advantages

• 1250 A rated current for demanding low-voltage distribution applications.
• Four-pole configuration for comprehensive switching and circuit protection.
• Ekip Dip LSI electronic trip unit with adjustable protection thresholds.
• Long-time, short-time delayed and instantaneous protection functions.
• 42 kA ultimate short-circuit breaking capacity at 415 V AC.
• 42 kA short-time withstand current for 1 s.
• Withdrawable moving-part design supports convenient inspection, servicing and replacement.
• Part of the modular ABB SACE Emax 2 air circuit breaker platform.

Key Features

• ABB SACE Emax 2 E1.2B air circuit breaker moving part.
• 1250 A rated uninterrupted current.
• 4-pole construction.
• Ekip Dip LSI solid-state electronic protection release.
• Long-time overload protection.
• Short-time delayed short-circuit protection.
• Instantaneous short-circuit protection.
• Adjustable electronic protection settings for network coordination.
• 42 kA Icu at 415 V AC.
• Withdrawable execution for use with the corresponding Emax 2 fixed part.
• Suitable for main and feeder protection in low-voltage switchboards.
• Designed for selective protection in industrial and commercial distribution systems.

Selective LSI Protection for Low-Voltage Distribution

ABB SACE Emax 2 air circuit breakers are engineered to provide dependable switching and protection for modern low-voltage electrical networks. The Ekip Dip LSI release combines long-time overload protection with short-time delayed and instantaneous short-circuit protection, allowing selective coordination across multiple levels of a distribution system.

The withdrawable E1.2 construction is particularly useful in switchboards where maintainability and operational flexibility are important. The moving breaker can be separated from its corresponding fixed chassis for inspection or servicing, while the E1.2B platform provides robust short-circuit performance for industrial, commercial and infrastructure applications.

Typical Applications

• Main low-voltage distribution switchboards.
• Industrial power distribution systems.
• Commercial building electrical distribution.
• Manufacturing and process facilities.
• Transformer distribution and protection.
• Infrastructure and utility installations.
• High-current feeder protection.
• Withdrawable switchgear requiring selective LSI protection.